astronomy

V1339 Aquilae

V1339 Aquilae is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand V1339 Aquilae rather than just read about it. In short: V1339 Aquilae, also known as HD 187567, is a Be star in the constellation Aquila. At its brightest its apparent magnitude is 6.22, making it barely visible to the naked eye at a location with very little light pollution.

Key takeaways

V1339 Aquilae belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect V1339 Aquilae to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of V1339 Aquilae from memory before moving on to harder problems.

Reference excerpt

V1339 Aquilae, also known as HD 187567, is a Be star in the constellation Aquila. At its brightest its apparent magnitude is 6.22, making it barely visible to the naked eye at a location with very little light pollution. It is located just 8 arc seconds from the center of the open cluster NGC 6828. V1339 Aquilae was discovered to be a Be star in 1925 by P. W. Merrill, M. L. Humason and C. G. Burwell. The star's variability was detected in 1966 by A. W. J. Cousins, R. Lake and R. H. Stoy, and because of this it was given its variable star designation, V1339 Aquilae, in 1979. V1339 Aquilae is around 9.5 times as massive as the Sun and has 4.6 times its diameter. Its binary nature was discovered by speckle interferometry in 1983, at the Kitt Peak 4 meter telescope. At the time of these speckle observations the stars were separated by 0.057 arc seconds.

References

Illustrations

Worked examples

Example 1 — a first encounter with V1339 Aquilae

Start with the simplest possible case. Write down what V1339 Aquilae claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to V1339 Aquilae before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about V1339 Aquilae ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of V1339 Aquilae

In research: V1339 Aquilae appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses V1339 Aquilae in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: V1339 Aquilae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquila (constellation), B-type subgiants, Be stars, so understanding it makes those chapters shorter.
In everyday life: Look for V1339 Aquilae outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study V1339 Aquilae in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what V1339 Aquilae means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain V1339 Aquilae out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is V1339 Aquilae in simple terms?

Why does V1339 Aquilae matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study V1339 Aquilae?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on V1339 Aquilae.